Read Edit View history 乙烯 yǐxī ethylene Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 乙烯 · yǐxī · ethylene 2026/03/04 乙烯 yǐxī ethylene a colorless, flammable gaseous hydrocarbon (C2H4) used in chemical synthesis and to ripen fruit 乙烯常被用于工业生产和催熟果实。 noun created sense Mar 4, 2026, 02:25 AM